In　order　to　solve　the　problem　of　poor　flexibility　of　fixed　time　control　strategy　applying　in　most　sequencing　batch　reactor　(SBR)　wastewater　treatment　plants　nowadays,　this　research　tries　to　enhance　the　performance　of　SBR　process　with　a　newly　built　real-time　control　strategy　and　to　improve　the　stability　of　SBR　system　at　low　temperature.　A　8.8　m3　pilot-scale　SBR　is　operated　for　treating　domestic　wastewater　with　fixed-time　control　strategy.　At　the　same　time,　frequency　conversion　technology　is　applied　to　control　ρDO　of　aeration　period　during　the　study.　This　study　investigates　the　empirical　expressions　of　frequency　(f),　aeration　time(t)　and　temperature(θ)　at　the　endpoint　of　nitrification　under　low　temperature,　and　establishes　a　real-time　control　strategy　and　applies　it　into　pilot-scale　SBR.　Results　show　that　real　time　control　strategy　for　low　temperature　is　successfully　applied　in　pilot-scale　SBR,　and　was　operated　more　than　100　days　under　low　temperature　condition　(11~18　°C),　and　the　effluent　ρCOD　is　lower　than　50×10-3　kg/m3,　the　effluent　ρTN　is　lower　than　5×10-3　kg/m3,　the　average　effluent　COD　and　TN　removal　efficiency　maintains　80%,　95%　respectively.　The　quality　of　effluent　achieves　the　A　in　the　first　grade　discharge　standard.